The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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When dragonflies mate, their tails form a love heart.
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There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
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